[Ocaml-lib-devel] Abstract IO

[Nicolas C. <war...@fr...>]

Hi list,

I just took some time to write a little module for handling IO in an
abstract way.
Several times I hit into some things that I wanted to print either in a
string or in a file, here is some beginning of answer to this problem.

For efficiency reason each input/output have two ways of reading/writing
data : for example a chanr nel input can write char by char or directly
strings. it's then a (char,string) input. An ouput takes a third parameter
which is the value returned by a call to close.

Then you can do the following :

let o = IO.output_string() in
IO.printf o "hello world %c"  '!';
let s = IO.close_out o in
print_endline s

which is equivalent to :

let o = IO.output_channel stdout in
IO.printf o "hello world %c" '!';
IO.close_out o; // are you sure :-)

Comments are of course welcome,

Nicolas Cannasse